A sliding valve air tightness testing device

Abstract

The utility model discloses a valve air tightness test device, including the valve air tightness detection device body, is set up the water baffle boss on the detection port of the valve air tightness detection device body's support plate, the water baffle boss is provided outside the detection port, is provided with the lower sealing element in the detection port, the lower part of detection port is linked together with the aeration mechanism, the sealing cylinder telescopic end of valve air tightness detection device is provided with the upper sealing element, the front side of detection device body is provided with the turnover control mechanism, the utility model relates to the valve air tightness detection technical field, and the design defect of existing valve air tightness detection device body is improved, and the water baffle boss, the reversible arc cover shell and the heating air supply mechanism are additionally arranged on the outer end of the detection port of detection device body, so that manual wiping of the immersion element such as valve body, upper sealing pad and lower sealing pad is not needed, and the overall efficiency of valve air tightness test operation can be greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of slide valve airtightness testing technology, specifically a slide valve airtightness testing device. Background Technology

[0002] In braking products such as air control valves for railway freight cars and locomotive distribution valves, the spool valve sealing mechanism is a core component. Through the air passage flow inside the spool valve, it controls the spool valve sleeve that cooperates with it, realizing the connection and closure of different air passages. This achieves the functions of controlling braking and releasing the brakes in the freight car air control valve and locomotive distribution valve, thus realizing the braking effect. The airtightness of the spool valve is one of its important parameters, directly affecting system efficiency; therefore, airtightness testing of the spool valve is crucial. A search revealed Chinese patent application CN223346358U, which discloses a spool valve airtightness testing device. This device involves quickly sealing the air passage on the valve body and then immersing the valve body in water to perform airtightness testing. However, this technical solution has at least two defects in its implementation: 1. The test port is located below the tray. After the test is completed, the residual water on the tray can easily flow into the test port, affecting the reliability of subsequent tests; 2. After each test, the valve body, upper sealing gasket, and lower sealing gasket and other immersed parts need to be manually wiped, which is labor-intensive and not suitable for batch testing. In view of this, in-depth research was conducted on the above problems, which led to this case. Utility Model Content

[0003] To address the shortcomings of existing technologies, this invention provides a slide valve airtightness testing device, which solves the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a slide valve airtightness testing device, comprising a slide valve airtightness testing device body, a testing port being provided on the support plate of the slide valve airtightness testing device body, a water-blocking protrusion being provided on the outer side of the testing port, a lower sealing element being provided inside the testing port, the lower part of the testing port being connected to an inflation mechanism, an upper sealing element being provided on the telescopic end of the sealing cylinder of the slide valve airtightness testing device, a flipping control mechanism being provided on the front side of the testing device body, an arc-shaped cover being installed at one end of the flipping control mechanism, one end of the arc-shaped cover being hinged to the side wall of the testing device body and having a purging assembly inside, the exhaust end of the purging assembly being directly above the testing port, and one end of the purging assembly extending to the outside of the arc-shaped cover and being connected to a heating and air supply mechanism.

[0005] The aforementioned flipping control mechanism includes a support, a swing arm, a lifting rod, and an electric telescopic rod. The support is mounted on the side wall of the detection device body. The middle part of the swing arm is rotatably engaged with the support. One end of the lifting rod is rotatably engaged with the swing arm, and the other end is rotatably connected to the side wall of the arc-shaped cover. One end of the electric telescopic rod is hinged to the side wall of the detection device body, and the other end is hinged to the swing arm.

[0006] The aforementioned heating and air supply mechanism includes a blower installed on the top of the detection device body. The blower's air outlet is connected to a hot air chamber, and a heating component is installed inside the hot air chamber. The hot air chamber's air outlet is connected to a purging component via a flexible connecting pipe.

[0007] The heating assembly includes baffles staggered in the hot air chamber, heating plates are arranged between the baffles, and heat exchange fins are provided on both sides of the heating plates.

[0008] The aforementioned purging assembly includes an air guide duct disposed within an arc-shaped housing. An air distribution connector is provided on the side wall of the air guide duct, and a purging pipe is provided at the outlet end of the air distribution connector. The purging pipe is positioned directly opposite the detection work area of ​​the detection device body.

[0009] The above-mentioned detection device has a controller on its side wall, and the controller has control buttons for controlling the flipping control mechanism and the heating and air supply mechanism. Beneficial effects

[0010] This invention provides a device for testing the airtightness of a slide valve. It offers the following advantages: This device improves upon existing designs that lack proper airtightness testing. A water-blocking protrusion is added to the outer edge of the testing port. After the airtightness test, water flows back into the tank under gravity, and the water remaining on the tray is blocked by the protrusion, effectively preventing water from flowing into the testing port and affecting subsequent test results. Simultaneously, a rotatable arc-shaped cover is added to the front of the device. After the test, hot air is supplied via a heating and air supply mechanism to dry the testing area, eliminating the need for manual wiping of the valve body, upper and lower sealing gaskets, and other submerged components. This significantly improves the overall efficiency of the slide valve airtightness test. Attached Figure Description

[0011] Figure 1 This is a three-dimensional structural diagram of the slide valve airtightness testing device described in this utility model.

[0012] Figure 2 This is an isometric structural diagram of the closed state of the arc-shaped cover described in this utility model.

[0013] Figure 3This is a cross-sectional view of the hot air chamber described in this utility model.

[0014] Figure 4 This utility model Figure 1 A magnified schematic diagram of the structure at position a.

[0015] In the diagram: 1. Detection device body; 2. Support plate; 3. Detection port; 4. Water-blocking boss; 5. Lower seal; 6. Sealing cylinder; 7. Upper seal; 8. Arc-shaped cover; 9. Support; 10. Swinging arm; 11. Lifting rod; 12. Electric telescopic rod; 13. Blower; 14. Hot air chamber; 15. Flexible connecting pipe; 16. Baffle; 17. Heating plate; 18. Heat exchange fins; 19. Air guide pipe; 20. Air distribution connector; 21. Purge pipe; 22. Controller. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Example: Refer to the appendix of the instruction manual Figure 1-4As can be seen, this application specifically designs a slide valve airtightness testing device. A test port 3 is provided on the support plate 2 of the slide valve airtightness testing device body 1. A water-blocking boss 4 is provided on the outside of the test port 3, and a lower seal 5 is provided inside the test port 3. The lower part of the test port 3 is connected to the inflation mechanism. An upper seal 7 is provided at the telescopic end of the sealing cylinder 6 of the slide valve airtightness testing device. A flipping control mechanism is provided on the front side of the testing device body 1. An arc-shaped cover 8 is installed at one end of the flipping control mechanism. One end of the arc-shaped cover 8 is hinged to the side wall of the testing device body 1 and a purging assembly is provided inside. The exhaust end of the purging assembly faces the top of the test port 3. One end of the purging assembly extends to the outside of the arc-shaped cover 8 and is connected to the heating and air supply mechanism. A controller 22 is provided on the side wall of the testing device body 1. The controller 22 is provided with control buttons for controlling the flipping control mechanism and the heating and air supply mechanism. Based on the existing slide valve airtightness testing device body 1... To address the design flaws, a water-blocking protrusion 4 is added to the outer end of the detection port 3 of the main body 1 of the testing device. After the airtightness test is completed, the water flows back into the water tank under gravity. The water remaining on the tray 2 is blocked by the water-blocking protrusion 4, effectively preventing water from flowing into the detection port 3 and affecting the results of subsequent tests. At the same time, a flip-up arc-shaped cover 8 is added to the front of the main body 1 of the testing device. After the test, hot air is sent in by the heating and air supply mechanism to dry the testing area. This eliminates the need for manual wiping of the valve body, upper sealing gasket, and lower sealing gasket, which greatly improves the overall efficiency of the airtightness test of the slide valve. It should be noted that the main body 1 of the above-mentioned slide valve airtightness testing device can be found in Chinese patent application with publication number CN223346358U. Its specific structure and operation process are common knowledge to those skilled in the art, and therefore will not be described in detail here.

[0018] In the specific implementation process, the above-mentioned flipping control mechanism includes a support 9, a swing arm 10, a lifting rod 11, and an electric telescopic rod 12. The support 9 is set on the side wall of the detection device body 1. The middle part of the swing arm 10 is rotatably engaged with the support 9. One end of the lifting rod 11 is rotatably engaged with the swing arm 10, and the other end is rotatably connected to the side wall of the arc-shaped cover 8. One end of the electric telescopic rod 12 is hinged to the side wall of the detection device body 1, and the other end is hinged to the swing arm 10. In use, the electric telescopic rod 12 is used as the power source to control the extension end of the electric telescopic rod 12 to retract, thereby pulling the left end of the swing arm 10 downward, which in turn causes the right end of the swing arm 10 to pull the lifting rod 11 diagonally upward, thereby flipping the arc-shaped cover 8 upward. Conversely, controlling the extension end of the electric telescopic rod 12 to expand, the arc-shaped cover 8 can be fastened to the outside of the working area.

[0019] In specific implementation, the aforementioned heating and air supply mechanism includes a blower 13 installed on the top of the detection device body 1. The air outlet of the blower 13 is connected to a hot air chamber 14, and a heating component is installed inside the hot air chamber 14. The air outlet of the hot air chamber 14 is connected to the purging component through a flexible connecting pipe 15. The heating component includes baffles 16 staggered inside the hot air chamber 14, with heating plates 17 arranged between the baffles 16. Heat exchange fins 18 are provided on both sides of the heating plates 17. The aforementioned purging component includes an air guide pipe 19 installed inside the arc-shaped cover 8. An air distribution connector 20 is provided on the side wall of the air guide pipe 19. The outlet end of the head 20 is equipped with a purge pipe 21, which is directly facing the detection operation area of ​​the detection device body 1. After the test is completed, the blower 13 and the heating plate 17 in the hot air chamber 14 are started. External air is blown into the hot air chamber 14 by the blower 13. The air flowing through is heated by the heating plate 17 and the heat exchange fins. The hot air is further injected into the air guide pipe 19 through the flexible connecting pipe 15, and then blown into the operation area through the air distribution joint 20 and the purge pipe 21 to automatically dry the immersed parts such as the valve body, upper sealing gasket and lower sealing gasket. The structure is simple and the drying speed is fast, which can effectively improve the efficiency of the test operation.

[0020] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A slide valve airtightness testing device, comprising a slide valve airtightness testing device body, characterized in that, The slide valve airtightness testing device has a testing port on its support plate. A water-blocking protrusion is provided on the outside of the testing port. A lower seal is provided inside the testing port. The lower part of the testing port is connected to the inflation mechanism. An upper seal is provided at the telescopic end of the sealing cylinder of the slide valve airtightness testing device. A flipping control mechanism is provided on the front side of the testing device body. An arc-shaped cover is installed at one end of the flipping control mechanism. One end of the arc-shaped cover is hinged to the side wall of the testing device body and a purging assembly is provided inside. The exhaust end of the purging assembly faces the top of the testing port. One end of the purging assembly extends to the outside of the arc-shaped cover and is connected to the heating and air supply mechanism.

2. The slide valve airtightness testing device according to claim 1, characterized in that, The flipping control mechanism includes a support, a swing arm, a lifting rod, and an electric telescopic rod. The support is set on the side wall of the detection device body. The middle part of the swing arm is rotatably engaged with the support. One end of the lifting rod is rotatably engaged with the swing arm and the other end is rotatably connected to the side wall of the arc-shaped cover. One end of the electric telescopic rod is hinged to the side wall of the detection device body and the other end is hinged to the swing arm.

3. The slide valve airtightness testing device according to claim 1, characterized in that, The heating and air supply mechanism includes a blower installed on the top of the detection device body. The air outlet of the blower is connected to a hot air chamber, and a heating component is installed inside the hot air chamber. The air outlet of the hot air chamber is connected to the purging component through a flexible connecting pipe.

4. The slide valve airtightness testing device according to claim 3, characterized in that, The heating assembly includes baffles staggered in the hot air chamber, heating plates are arranged between the baffles, and heat exchange fins are provided on both sides of the heating plates.

5. A slide valve airtightness testing device according to any one of claims 1-4, characterized in that, The purging assembly includes an air guide duct disposed within an arc-shaped housing. An air distribution connector is provided on the side wall of the air guide duct, and a purging pipe is provided at the outlet end of the air distribution connector. The purging pipe is directly facing the detection operation area of ​​the detection device body.

6. The slide valve airtightness testing device according to claim 1, characterized in that, A controller is provided on the side wall of the detection device body, and the controller is provided with control buttons for controlling the flipping control mechanism and the heating and air supply mechanism.

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